Machinery & Truck PartsThe Cat 3116 is a 6.6 L (403 cu in) diesel engine with a inline-6, turbocharged; some units naturally aspirated configuration. Typical output is approximately 170–300 HP (varies by rating), depending on rating and application. Its fuel system is mechanical or heui depending on year. Common applications include freightliner fl, gmc/chevy topkick and kodiak medium-duty trucks, buses, marine, equipment. The engines listed below are actual in-stock units identified by year and stock number. Each used Cat 3116 engine is inspected and tested before shipping, includes warranty coverage, and can ship nationwide with freight quoted to the destination ZIP code. Call (800) 696-5459 with the original vehicle or equipment details to confirm fitment.
Cat 3116 Engine Specifications
| Displacement | 6.6 L (403 cu in) |
| Configuration | Inline-6, turbocharged; some units naturally aspirated |
| Power | ~170–300 HP (varies by rating) |
| Fuel System | Mechanical or HEUI depending on year |
| Common Uses | Freightliner FL, GMC/Chevy Topkick and Kodiak medium-duty trucks, buses, marine, equipment |
| Engine Family | Direct predecessor to the CAT 3126 |
What Uses the Cat 3116 Engine
Freightliner FL, GMC/Chevy Topkick and Kodiak medium-duty trucks, buses, marine, equipment
Cat 3116 Fitment and Model Comparison
The 3116 belongs to a specific Cat engine family and should not be selected only by displacement or visual similarity. Compare the engine serial information, year, rating, electronics or fuel system, flywheel housing, mounts, oil pan, cooling package, and included accessories with the engine being replaced.
What to Check When Buying a Used Cat 3116
Confirm the engine identification and original application first. Review the listing photos and ask about testing, cold-start behavior where applicable, visible leaks, oil and coolant condition, included electronics, turbocharger or fuel-system components, flywheel housing, mounts, oil pan, and accessories. Warranty coverage is included, but call to review the terms for the specific stock number.
Cat 3116 Engines In Stock
5 in stock. Shop tested used Cat 3116 engines listed by year and stock number.
Cat 3116 Buying FAQ
How do I confirm a Cat 3116 engine fits?
Have the vehicle or equipment year, make, model, application, engine serial information, and listing stock number ready. Call (800) 696-5459 so the parts team can compare the exact engine and included components.
Is warranty coverage included with a used Cat 3116 engine?
Yes. The engine is inspected and tested before shipping and includes warranty coverage. Call to review the terms for the specific stock number before ordering.
Can a Cat 3116 engine ship nationwide?
Yes. Nationwide freight is available and quoted to the destination ZIP code. Call with the stock number and delivery location for a freight quote.
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